Mimics-based computer simulation double-wedge-shaped osteotomy method

A computer, double-wedge technology, applied in the medical field, can solve the problems of low accuracy, small contact area of ​​bone surface, low stability of bone connection, etc.

Active Publication Date: 2021-08-27
NANFANG HOSPITAL OF SOUTHERN MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Humeral wedge osteotomy is a small branch of osteotomy. In prior art humeral wedge osteotomy, the carrying angle is measured with a protractor on the X-ray of the elbow joint, which is affected by body position and...

Method used

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  • Mimics-based computer simulation double-wedge-shaped osteotomy method
  • Mimics-based computer simulation double-wedge-shaped osteotomy method
  • Mimics-based computer simulation double-wedge-shaped osteotomy method

Examples

Experimental program
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Effect test

Embodiment 1

[0062] A computer-simulated double-wedge osteotomy method based on Mimics, such as figure 1 shown, including the following steps:

[0063] S1: Obtain the CT projection data of the patient's affected side and the CT projection data of the healthy side, both of which include the entire segment of the patient's humerus, radius and ulna.

[0064] S2: Input the CT projection data of the affected side and the CT projection data of the healthy side into Mimics to establish corresponding three-dimensional models of the affected side and the healthy side that only include the humerus, radius and ulna. Input the CT projection data into Mimics to build a three-dimensional model including only the humerus and radius and ulna, which specifically includes the following steps: S21: Import the CT projection data into Mimics in DICOM format to create a msc file model; S22: Build the msc file model using thresholds Mask; S23: Edit the mask in the mask 3D interface, use the lasso tool to adjust...

Embodiment 2

[0074] A computer-simulated double-wedge osteotomy method based on Mimics, other features are the same as in Embodiment 1, the difference is: as Figure 7 As shown, the simulated osteotomy in step S7 is specifically to use the 5 points in step S6 as osteotomy indication points, select the Cut to orthogonal screen option in the Simulate module to cut the osteotomy, and hide the middle bone block;

[0075] Such as Figure 8 As shown, the simulated surgical reduction is specifically to divide the humerus and radius and ulna after osteotomy into upper and lower parts, and then rotate the upper bone block around point C to correct the angle of correction. Mimics simulates surgical reduction.

[0076] The computer-simulated double-wedge osteotomy method based on Mimics can calibrate the inaccurate carrying angle of the measurement caused by the poor compliance of the supinated body position, improve the accuracy of orthopedic surgery, and realize the simulated osteotomy operation, h...

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Abstract

The invention discloses a Mimics-based computer simulation double-wedge-shaped osteotomy method. The method comprises the following steps: acquiring CT projection data of the affected side and CT projection data of the uninjured side of a patient; respectively inputting the affected side CT projection data and the uninjured side CT projection data into Mimics, and establishing a corresponding affected side three-dimensional model and uninjured side three-dimensional model only containing humerus and ulna and radius; performing X-ray photography on the affected side three-dimensional model and the uninjured side three-dimensional model in an X-ray module, and acquiring a corresponding affected side simulated normal-position X-ray film and an uninjured side simulated normal-position X-ray film; determining an affected side osteotomy orthopedic angle according to the affected side simulation normal position X-ray film and the uninjured side simulation normal position X-ray film; designing an osteotomy path on the affected side simulation orthotopic X-ray film; projecting an osteotomy path on the affected side simulation normal position X-ray film to an entity STL according to a position likelihood principle to obtain an osteotomy indication point; and enabling a computer to simulate osteotomy and surgical reduction. The method can improve the measurement precision of the lifting angle, effectively reduce the lateral displacement, increase the bone surface contact area, improve the bone contact stability, and reduce the bone disconnection rate.

Description

technical field [0001] The invention relates to the field of medical technology, in particular to a computer-simulated double-wedge osteotomy method based on Mimics. Background technique [0002] Mimics is an interactive medical image control system of Materialise Company. It is a highly integrated and easy-to-use 3D image generation and editing software. It can input various scanning data such as CT and MRI, and create 3D models for editing. Transformation processing of scale data. [0003] Osteotomy is a kind of orthopedic surgery in orthopedics. It is mostly used for congenital abnormal bone development, congenital or birth trauma caused by dislocation and malunion of bones and joints, and bone dislocation or deformity affecting function after traumatic fracture. During the operation, according to the design, a certain shape is cut at the fixed bone, and then reconnected to change the abnormal line of force, correct the deformity, and improve some functions of the limbs....

Claims

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Application Information

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IPC IPC(8): A61B34/10A61B34/20A61B17/17
CPCA61B34/10A61B34/20A61B17/1732A61B17/1703A61B2034/105A61B2034/107A61B2034/108A61B2034/2065
Inventor 魏宽海周扬陈滨崔壮邓伊航
Owner NANFANG HOSPITAL OF SOUTHERN MEDICAL UNIV
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